Python接口自动化浅析yaml配置文件原理及用法

目录

• 一、yaml介绍及使用
  • 01 yaml简介
  • 02 yaml语法规则
  • 03 yaml数据结构
    • 对象
    • 数组
    • 纯量
• 二、yaml配置文件的使用
  • 01 yaml配置文件准备
  • 02 yaml配置文件格式校验
• 三、yaml配置文件读写
  • 01 安装pyYaml
  • 02 yaml模块源码解析
    • load:
    • dump:
  • 03 读写yaml配置文件

person:
    name: vivi
    age: 18

person:{name: vivi，age: 18}

{"name":"vivi","age":18}

color:
   - red
   - blue
   - green

color: [red,blue,green]

["red","blue","green"]

n1: 8
n2: 8.8
n3: true
n4: false
n5: "vivi"

mysql:
  host: "127.0.0.1"
  port: 3306
  user: "vivi"
  password: "123456"
  db: "ITester"
  charset: "utf8"

def load(stream, Loader=None):
    """
    Parse the first YAML document in a stream
    and produce the corresponding Python object.
    """
    if Loader is None:
        load_warning("load")
        Loader = FullLoader
    loader = Loader(stream)
    try:
        return loader.get_single_data()
    finally:
        loader.dispose()
        
def dump(data, stream=None, Dumper=Dumper, **kwds):
    """
    Serialize a Python object into a YAML stream.
    If stream is None, return the produced string instead.
    """
    return dump_all([data], stream, Dumper=Dumper, **kwds)

import yaml
 
class YamlHandler:
    def __init__(self,file):
        self.file = file
 
    def read_yaml(self,encoding="utf-8"):
        """读取yaml数据"""
        with open(self.file, encoding=encoding) as f:
            return yaml.load(f.read(), Loader=yaml.FullLoader)
            
    def write_yaml(self, data, encoding="utf-8"):
        """向yaml文件写入数据"""
        with open(self.file, encoding=encoding, mode="w") as f:
            return yaml.dump(data, stream=f, allow_unicode=True)
 
if __name__ == "__main__":
    data = {
        "user":{
            "username": "vivi",
            "password": "123456"
        }
    }
    # 读取config.yaml配置文件数据
    read_data = YamlHandler("../config/config.yaml").read_yaml()
    # 将data数据写入config1.yaml配置文件
    write_data = YamlHandler("../config/config1.yaml").write_yaml(data)
    print(read_data)
 

{"mysql": 
    {
           "host": "127.0.0.1", 
           "port":3306, 
           "user": "vivi", 
        password": "123456", 
             "db": "ITester", 
        "charset": "utf8"
   }
}

user:
  password: "123456"
  username: vivi